5 papers
Casimir stress on lossy magnetodielectric spheres
Christian Raabe, Ludwig Knöll, Dirk-Gunnar Welsch
An expression for the Casimir stress on arbitrary dispersive and lossy linear magnetodielectric matter at finite temperature, including left-handed material, is derived and applied…
Entanglement transformation at dielectric four-port devices
S. Scheel, L. Knoll, T. Opatrny +1
Quantum communication schemes widely use dielectric four-port devices as basic elements for constructing optical quantum channels. Since for causality reasons the permittivity is n…
QED in dispersing and absorbing media
Ludwig Knoll, Stefan Scheel, Dirk-Gunnar Welsch
After giving an outline of the quantization scheme based on the microscopic Hopfield model of a dielectric bulk material, we show how the classical phenomenological Maxwell equatio…
Generating and monitoring Schrödinger cats in conditional measurement on a beam splitter
M. Dakna, J. Clausen, L. Knoll +1
Preparation of Schrödinger-cat-like states via conditional output measurement on a beam splitter is studied. In the scheme, a mode prepared in a squeezed vacuum is mixed with a mod…
Photon adding and subtracting and Schroedinger-cat generation in conditional output measurement on a beam splitter
D. -G. Welsch, M. Dakna, L. Knoll +1
The problem of photon adding and subtracting is studied, using conditional output measurement on a beam splitter. It is shown that for various classes of states the corresponding p…